• James Cox, MD, has been named medical director of ATS Medical (Minneapolis), a manufacturer of cardiac surgery products and services.

• Phuong Tram has been appointed chief information officer at DuPont (Wilmington, Delaware), succeeding Robert Ridout, who will retire effective Dec. 31.

• Jon Hanson has joined iBASEt (Foothill Ranch, California), a provider of operations process management software, as VP of North American sales.

• Jim Dorst has joined SpectraScience (San Diego) as vice president of finance and CFO. SpectraScience develops spectrophotometry systems capable of determining whether tissue is normal, pre-cancerous or cancerous without removing tissue from the body.